% 文档类(模板)
\documentclass{ctexart}
% 导言区

% 正文区(有且只能有一个)
\begin{document}
Hello \LaTeX.	

{\small The small and Romans ruled}

The small and {\bfseries bold Romans ruled}

{\Large all of great big great big Italy.
all of {\itshape Italy}.}

\end{document}
